Electric-arc lamp



(No Model.)

B. E. GREENE.`

ELECTRIC ARO LAMP.

No. 588,822. Patented Aug. 24,1897.

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BENJAMIN F. GREENE, OF SI-IERIDAN, PENNSYLVANIA.

ELECTRIC-ARC LAM P.

SPECIFICATION forming part of Letters Patent No. 588,822, dated August24, 17897.'

Application filed April 22, 1897.

Be it known that I, BENJAMIN F. GREENE, a citizen of the United Statesof America, residing' at Sheridan, in the county of Allegheny and Stateof Pennsylvania,liave invented certain new and useful Improvements inArc- Iiights, of which the following is a specification, reference beinghad therein to the accompanying drawings.

This invention relates to certain new and useful improvements inarc-lamps, and has for its object to construct a lamp of this typewherein the gas generated by the combustion of the carbons will beretained and the life of the carbon thereby increased.

A further object of the invention is to provide means for automaticallyfeeding the carbonin order to insure a steady and even light therefromand to obviate the flickering and fluctuating of the light ordinarydiscernible in lamps of this character.

A further object of the invention is to provide an arc-lamp that will beapplicable for use either within a building or for street use, and astill further object is to construct a lamp extremely sim ple inconstructiomstron g, durable, effectual in its operation, andcomparatively inexpensive to manufacture.

The invention finally consists in the novel construction, combination,and arrangement of parts to be hereinafter more specifically described,and particularly pointed out in the claims.

In describing the invention in detail reference is had to theaccompanying drawings, forming a part of this speciiicatiomand whereinlike letters of reference indicate similar parts throughout the severalviews,in which- Figure l is a vertical sectional view of my improvedarc-lamp as constructed for indoor use. Fig. 2 is a side elevation ofthe long lamp as employed for outdoor use, showing globe in section.Fig. 3 is a side view, partly in section, of the feeding mechanism. Fig.4 is a cross-sectional view taken on the line X X of Fig. 3. Fig. 5 is aplan view of the check-plug, supporting-plate for globe, and hangercarrying the lower carbon. Fig. 6 is a longitudinal sectional view ofthe same.

Fig. 7 is a plan view of one of the packingrings employed in thecheck-plu g.

Referring now to the drawings by reference- Serial No. 63 3,296. (Nomodel.)

letters, d indicates the inner frame, to the top cross-bar of which isfulcrumed an arm d', having its lower end pivotally secured to anelbow-lever l), which is journaled in a swinging frame c, said framebeing in turn pivotally supported by the inner frame a and carries inits one end an armature c, operating in a magnetf, which is supported bya bedplate f', and on its other end is connected to a dash-pot d. Saidelbow-levert) is provided with a bifurcated end, the arms 7c of whichengage within a circumferential groove m, formed in the clutching-ring gon the upper carbon-rod g', said clutching-ring g being provided with abeveled upper face which engages a sleeve 7L, having a mitered end l anda iiange z', which extends downward into close proximity with theswinging frame c.

In Fig. l I have shown in dotted lines an elbow-arm n, which connectsthe elbow-lever l) with the clutching-rin g g. As in this form of lampthe clutching-ring lies at the bed-plate f', while in a long lamp, whichis the construction shown in Fig. 3, the clutching-ring will be at apoint above the magnet. The base-plate f is connected to the plate f2 byrodsfg, said platef2 being adapted to support the shadef'l and thehanger for the lower carbon, which is accomplished by a ring or platef5, Carr Ying lugs c', which engage in grooves formed in the plate f2,said ring f5 being turned so asto cause the lugs to engage the ring orplate f2. Rods e2 are connected to the ring or plate f5 and carry theholder or hanger c3, which supports the lower carbon e4. Located withinthe ring f5 is a checlcplug d', from which the carbon passes and hasarranged around the carbon a series of packing-rings dwhich serve toprevent the gas that is generated within the globe cl3 from escaping,and thus increasing the efficiency and life of the carbon, the seat forthe check-plug being sufficiently large to admit of this plug adjustingon its seat to keep the upper carbon in perfect Contact with the lowercarbon, said plug being held in its position by means of an annular ringcli. Insulation Z is provided at the plate f', and insulation g2 is alsoprovided at the base of the holder or hanger c3, the contact from theframe o. to the upper-carbon rod being shown in Fig. 3 at g3, and inFig. 2 I have shown in dotted outlines the globe g4, which sur ICOrounds the inner globe when the lamp is used for outdoor lighting. Thecarbon-rods being secured in their proper positions the armature Will bein complete engagement with the magnet and the inclined face of theclutching-ring will be in engagement with the projecting end of thesleeve,\vhich will serve to hold the clutching-ring in irm engagementWith the carbon-rod, and as the carbon becomes consumed the rising ofthe armature operates the oscillating frame and causes the i same,wl1ilevibrating, to engage the pin ld,

lifting the sleeve from its close engagement with the clutchin g-rin gand perm ittin g the rod to descend, so as to allow the upper carbon todrop into engagement With the lower carbon,when the rod is again engagedby the ring and the carbon thus fed automatically until the entirecarbon is used, thus materiallyv increasing the lite of the carbon, asthe same is fed evenly and is used until the entire carbon is consumed,and by reason of the checkplug located at the top of the globe d3 thegas, which is generated Within the globe, is prevented from escaping,and is thus consumed to add to the brilliancy of the light.

It will of course be observed that by changing the magnet so as toconform thereto the same mechanism may be employed for an alternatingcurrent and the lamp used thereon, and it Will also be noted thatvarious changes maybe made in the details of construction Withoutdeparting from the general spirit ot my invention.

Having fully described my inventiomwhat I claim as new, and desire tosecure by Letters Patent, is

l. In an are-lamp the combination with a clutching-ring of a sleevehaving a mitered end engaging said clutching-ring,andaswinging framecarrying an elbow-lever to engage the ring, said swinging frameconnected to an armature and dashpot to operate the clutching-rin g andautomatically feed the carbon as required.

2. In an arc-lamp the combination with the inner frame a rod operatingin said frame and engaging the carbon, a clutching-ring and sleevecarried by said rod, an elbow-lever having one arm connected to theframe by a link, the opposite end engaging in a circumferential groovein the clutching-ring, a swinging frame pivot-ally connected to saidelbow-lever and electrical means for automatically feeding the carbon,substantially as shown and described.

ln an arc-lamp the combination of the inner frame,an elbow-leverpivotal] y attached to said frame, a swinging frame pivoted to the supportingframe,said elbow-lever fulcru med to said swinging frame andhaving a bifureated end, a rod sliding in said inner frame, a sleevehaving a mitered end operating on said rod, a clutch-ring having acircumfer` ential groove engaging the bifurcated end of the elbow-leverand operating to retain the sleeve in position, means whereby theclutching-ring is released to automatically feed the carbon` alamp-globe su rrou nding the carbon, a check-plug in the top ot' saidlamp-globe to retain the generated gas, substantially as shown anddescribed.

ln testimony whereof I allix my signatuie in presence oi' two witnesses.

BENJAMIN F. GREENE.

\Vitnesses:

W. H. Turrini-mann, Guo. B. PARKER.

